Constructor and Initializer Block Execution Order

Consider the following class declarations.

public class A {
   { System.out.println("A block"); }
   public A() { System.out.println("A constructor"); }
}

public class B extends A {
   { System.out.println("B block"); }
   public B() { System.out.println("B constructor"); }
}

public class Test {
    public static void main(String[] args) {
         new B();
    }
}

What output is produced when the main method in the Test class is executed?